Impact of Sr2+ doping on the structural, dielectric, ferroelectric and optical properties of YFeO3 perovskite phosphor

Kumar, Dinesh; Yadav, Sadhana; Singh, Chandra Bhal; Yadav, Ram Sagar; Bahadur, S.; Singh, Akhilesh Kumar

doi:10.1016/j.jallcom.2023.169286

Cited by 12 publications

(5 citation statements)

References 46 publications

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“…21 Because the charge is required to be neutral, the substitution of Co ions may produce oxygen vacancies or cobalt ions with different ionization states. 22 The obtained refined unit cell volume and lattice parameters increase with the increase of Co ion concentration (Table S1). 2b.…”

Section: Resultsmentioning

confidence: 96%

Co-Doped Ni₃V₂O₈ Nanofibers Achieving d–d Orbital Coupling for Electrocatalytic Oxygen Reduction

Gao

Guo

et al. 2023

Inorg. Chem.

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Efficient and robust non-platinum-group metal electrocatalysts for O 2 reduction are a prerequisite for practical high-performance fuel cells and metal−air batteries. Herein, we reported an integrated principle of gradient electrospinning and controllable pyrolysis to fabricate various Co-doped Ni 3 V 2 O 8 nanofibers with high oxygen reduction reaction (ORR) activity. The representative Co 1.3 Ni 1.7 V 2 O 8 nanofibers showed outstanding ORR performance in an alkaline solution with a halfwave potential (E 1/2 ) of 0.874 V vs RHE, along with high long-term stability. Furthermore, the introduction of Co could effectively restrain the growth of nanoparticles and change the electronic structure of Ni 3 V 2 O 8 . Control experiments and theoretical calculations demonstrated that upon Co-doping, the hybridization between the 3d orbital for both Co and Ni guaranteed the stable adsorption interaction with O 2 over Ni and Co metal centers. Meanwhile, the weakened binding ability of Ni 3 V 2 O 8 to OH* reduced the ORR free energy. Overall, the synergistic effect of Co and Ni metal cations essentially reflected the origin of ORR activity on the Co-doped Ni 3 V 2 O 8 nanofibers. This work offers new insights and practical guidance for designing highly active ORR catalysts for electrochemical clean energy conversion and storage.

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Section: Resultsmentioning

confidence: 96%

Co-Doped Ni₃V₂O₈ Nanofibers Achieving d–d Orbital Coupling for Electrocatalytic Oxygen Reduction

Gao

Guo

et al. 2023

Inorg. Chem.

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“…[ 21 ] Sr 2+ ‐doped YFO (at Y site) sample exhibited high dielectric permittivity when compared to un‐doped YFO sample. [ 22 ] Nagrare et al [ 23 ] confirmed the multiferroic property of YFO nanocrystals by demonstrating the coexistence of mild ferromagnetism and ferroelectricity at ambient temperature. Popkov et al [ 24 ] have prepared the YFO nanomaterial with different crystallite size (29 ± 3, 41 ± 5, 49 ± 5, 58 ± 6) using different soft‐chemical methods, but 58 ± 6 nm of YFO have shown better magnetic behavior when compared to other crystallite size of YFO.…”

Section: Introductionmentioning

confidence: 99%

“…[7] Doping the appropriate ions into YFO at Y site or Fe site, change of calcination/ sintering temperature or particle size significantly influenced the dielectric and magnetic behaviors. [12][13][14][15][16][17][18][19][20][21][22][23][24] For instance, donor substitution of Ti 4þ at Fe 3þ site showed the improvement in magnetic and dielectric properties of YFO. [16] Prdoped and Nd-doped YFO ceramic showed the high dielectric constant and low dielectric loss when compared to un-doped YFO sample.…”

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confidence: 99%

Enhanced Magnetic and Dielectric Properties of YFeO₃ Ceramics via Formation of Solid‐Solution with Sr₂Bi₄Ti₅O₁₈ and ZnSnO₃ Oxides

Venkatadri,

Zarena

2024

Physica Status Solidi (b)

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In the present investigation, magnetic and dielectric properties of solid‐solution formed between the YFeO3 with the similar crystal structure of other oxide materials are focused on. Orthorhombic crystal structure of YFeO3 (YFO), Sr2Bi4Ti5O18 (SBT), and ZnSnO3 (ZS) nanomaterials are considered to prepare the solid solutions at 1150 °C/3 h. YFO and solid solutions exhibit the orthorhombic crystal structure, which is conformed through Rietveld refinement using X‐Ray powder diffraction pattern. The decreased average grain size is observed for the solid solution (3.0 μm for YFO and ZS and 2.6 μm for YFO and SBT) when compared to YFO (3.4 μm) through scanning electron microscopy. Oxidation state of each atom/ion/element present in the YFO and solid solutions are conformed through X‐Ray photoelectron spectroscopy studies. The solid solution formed between the YFO and SBT exhibits high magnetization value (2.92 emu g−1) and high coercive filed (67.5 Oe) when compared to solid solution formed between the YFO and ZS (magnetization value = 2.48 emu g−1, and coercive filed = 46.4 Oe) and YFO (magnetization value = 1.91 emu g−1, and coercive filed = 61.8 Oe). High dielectric permittivity (εr), low dielectric loss (tan δ), and low conductivity are observed for the solid solution formed between the YFO and SBT, when compared to other materials in this study.

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“…5 Several studies have revealed that doping of appropriate ions into YFO, change of sintering temperature or particle size are greatly influenced the dielectric and magnetic characteristics of YFO ceramic. [10][11][12][13][14][15][16][17][18][19][20] For instance, donor dopant Ti 4+ at Fe 3+ site was improved the magnetic and dielectric characteristics of YFO ceramic. 14 Asif et al, 15,16 have been observed the high dielectric constant and low dielectric loss for Nd 3+ doped YFO and Pr 3+ doped YFO when compared to pure YFO sample.…”

mentioning

confidence: 99%

“…Sr 2+ doped YFO sample showed the improved dielectric permittivity when compared to that of un-doped YFO sample. 20 The physical properties, especially dielectric response, is mainly depends on the densification as well as grain size of that sample. It is well-known that glass sintering aids will help to promote the grain growth and densification of the materials.…”

mentioning

confidence: 99%

Glass Sintering Aid Effect on Magnetic and Dielectric Properties of YFeO₃ Ceramics

Mohammed,

Dachuru

2024

ECS J. Solid State Sci. Technol.

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YFeO3 (YFO) and optimized glass wt% [0.5Li2O-0.5K2O-2B2O3 (LKBO) and BaO-Bi2O3-B2O3 (BBBO)] as a sintering aid in YFO ceramics were fabricated using fine powders prepared from sol-gel technique. Pure YFO and glass sintering aid added into YFO ceramics show orthorhombic crystal structure, confirmed by Rietveld refinement with the help of X-ray powder diffraction data. Scanning electron microscopy study revealed that the glass sintering aid added into YFO ceramics shows a higher average grain size than that of YFO ceramic. X-ray photoelectron spectroscopy was employed to confirm the presence of each atom/ion/element and their oxidation number in their respective samples. Using the Archimedes method, the density of the each ceramic sample was estimated. The BBBO glass sintering aid added into YFO exhibited a higher maximum magnetization value (2.82 emu/g) compared to that of LKBO added into YFO (2.51 emu/g) as well as pure YFO (1.53 emu/g) ceramics. BBBO glass sintering aid added into YFO ceramic shows a higher dielectric constant, lower dielectric loss, and lower conductivity compared to LKBO added into YFO as well as pure YFO ceramics. In conclusion, improved magnetic and dielectric response of BBBO glasses added into YFO ceramic is a potential candidate for different dielectric-magnetic based applications.

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Impact of Sr2+ doping on the structural, dielectric, ferroelectric and optical properties of YFeO3 perovskite phosphor

Cited by 12 publications

References 46 publications

Co-Doped Ni₃V₂O₈ Nanofibers Achieving d–d Orbital Coupling for Electrocatalytic Oxygen Reduction

Co-Doped Ni₃V₂O₈ Nanofibers Achieving d–d Orbital Coupling for Electrocatalytic Oxygen Reduction

Enhanced Magnetic and Dielectric Properties of YFeO₃ Ceramics via Formation of Solid‐Solution with Sr₂Bi₄Ti₅O₁₈ and ZnSnO₃ Oxides

Glass Sintering Aid Effect on Magnetic and Dielectric Properties of YFeO₃ Ceramics

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Impact of Sr2+ doping on the structural, dielectric, ferroelectric and optical properties of YFeO3 perovskite phosphor

Cited by 12 publications

References 46 publications

Co-Doped Ni3V2O8 Nanofibers Achieving d–d Orbital Coupling for Electrocatalytic Oxygen Reduction

Co-Doped Ni3V2O8 Nanofibers Achieving d–d Orbital Coupling for Electrocatalytic Oxygen Reduction

Enhanced Magnetic and Dielectric Properties of YFeO3 Ceramics via Formation of Solid‐Solution with Sr2Bi4Ti5O18 and ZnSnO3 Oxides

Glass Sintering Aid Effect on Magnetic and Dielectric Properties of YFeO3 Ceramics

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Co-Doped Ni₃V₂O₈ Nanofibers Achieving d–d Orbital Coupling for Electrocatalytic Oxygen Reduction

Co-Doped Ni₃V₂O₈ Nanofibers Achieving d–d Orbital Coupling for Electrocatalytic Oxygen Reduction

Enhanced Magnetic and Dielectric Properties of YFeO₃ Ceramics via Formation of Solid‐Solution with Sr₂Bi₄Ti₅O₁₈ and ZnSnO₃ Oxides

Glass Sintering Aid Effect on Magnetic and Dielectric Properties of YFeO₃ Ceramics